Food is the main fuel the human body gets its energy from. A well-balanced, healthy diet can keep the human body energized and healthy, increasing the endurance and stamina. To have a good stamina in bed, you should eat a low-fat diet which contains lots of fruits and veggies, along with lean meats. For long-lasting energy, it is recommended that men should plan a third of their diet composing of carbs and starches.
Also, eat many small meals each day rather than 2 or 3 large meals. Additionally, snack on fresh fruits, raw veggies, nuts and other lean proteins between meals.